patient 1 and patient 2 both had a transplant. which mostly likely expalins why patient 1 had a successful transplant and patinet 2 did not

where is the option.let me know

answer: all : )

explanation:

the principles and empirical processes of discovery and demonstration considered characteristic of or necessary for scientific investigation, generally involving the observation of phenomena, the formulation of a hypothesis concerning the phenomena, experimentation to test the hypothesis, and development of a conclusion that confirms, rejects, or modifies the hypothesis.